Vania



HoLLmGER L FRY.

Stovepipe Damper.

No. 102,266. Patented-Apri| 26, 1870.

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N.PErERS. PHQTO-LITHDGRAPHER, WASHINGYQN n C GEORGE HoLLnnrEE AND SAMUEL H. EEY, oE EOTHSVILLE, PENNSYL- VAEIA.

Lenen Patent No. 102,266, dated April 26, 1870.

The Schedule referred to in these Letters Patent making part of the lame.

We, GEORGE HOLLINGEE and SAMUEL H. FRY, of Rothsville, in the county of. Lancaster and State of Pennsylvania, have invented a certain Improvement on Stove-pipe Dampers, of which the following is a specification.

The nature of our invention consists in interposing an ovaldisk centrally between segmental disks of a circle, both for the purpose of a spark-arrester and the formation of two fines, the whole being a single piece of casting combined in one piece or design.

The drawings illustrate this damper.

Figure l isa perspective view of the damper.

Figure 2, a horizontal section.'

A brief explanation will enable any one skilled in the business to make and use our invention.

,.1 The upper segmental disk, marked A, gs. 1, 2, projects from its slightly rounded central face or diamter to the one side, forming a little more than 'a semicircle, while the lower segmental disk A', similar in radius and circumference, projects on the opposite si e. v

These disks A and A' are united on' each side by end pieces, C, to which the gudgeons D D are cast.

Connected with these end pieces, and centrally hetween the disks A A', there is also an oval disk, B,

projecting equally beyond the end pieces, centrally, as

lhe arrows indicate the passage of the products of combustion when the damper is in a horizontal position within thepipe P.

The heat is arrested by the upper and lower disks closing the pipe around its entire circumference, but

' admitting the yescape of smoke to pass through the two ilues thus formed, increasing the open space and giving it a two-fold action, at the same time that the central oval disk B forms a spark-catcher, by it constituting one of the most simple and useful dampers.

Aware that the patent No. 38,7 76, of June 2, 1863, (in which one of the parties hereto is interested,) consists of two overlapping segmental disks, whose planes are a little apart and connected at their sid'csby plates or end pieces with gudgeons, in which two segmental disks are claimed, we, therefore, do not claim- 

